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postgres/contrib/btree_gist/sql/timestamp.sql

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-- timestamp check
CREATE TABLE timestamptmp (a timestamp);
\copy timestamptmp from 'data/timestamp.data'
SET enable_seqscan=on;
SELECT count(*) FROM timestamptmp WHERE a < '2004-10-26 08:55:08';
SELECT count(*) FROM timestamptmp WHERE a <= '2004-10-26 08:55:08';
SELECT count(*) FROM timestamptmp WHERE a = '2004-10-26 08:55:08';
SELECT count(*) FROM timestamptmp WHERE a >= '2004-10-26 08:55:08';
SELECT count(*) FROM timestamptmp WHERE a > '2004-10-26 08:55:08';
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;
CREATE INDEX timestampidx ON timestamptmp USING gist ( a );
SET enable_seqscan=off;
SELECT count(*) FROM timestamptmp WHERE a < '2004-10-26 08:55:08'::timestamp;
SELECT count(*) FROM timestamptmp WHERE a <= '2004-10-26 08:55:08'::timestamp;
SELECT count(*) FROM timestamptmp WHERE a = '2004-10-26 08:55:08'::timestamp;
SELECT count(*) FROM timestamptmp WHERE a >= '2004-10-26 08:55:08'::timestamp;
SELECT count(*) FROM timestamptmp WHERE a > '2004-10-26 08:55:08'::timestamp;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;